JumpLeftImg = new Array();
		JumpLeftImg[0] = "about/index2.html";
		JumpLeftImg[1] = "about/index2.html";
		JumpLeftImg[2] = "about/index2.html";
		JumpLeftImg[3] = "about/index2.html";
		JumpLeftImg[4] = "about/index2.html";
		JumpLeftImg[5] = "about/index2.html";
		JumpLeftImg[6] = "about/index2.html";
		JumpLeftImg[7] = "about/index2.html";
		JumpLeftImg[8] = "about/index2.html";
		JumpLeftImg[9] = "about/index2.html";
		JumpLeftImg[10] = "about/index2.html";
		JumpLeftImg[11] = "about/index2.html";
		JumpLeftImg[12] = "about/index2.html";

	ChangeLeftImg = new Array();
		ChangeLeftImg[0] = "k_img/maingraphic01.jpg";
		ChangeLeftImg[1] = "k_img/maingraphic02.jpg";
		ChangeLeftImg[2] = "k_img/maingraphic03.jpg";
		ChangeLeftImg[3] = "k_img/maingraphic04.jpg";
		ChangeLeftImg[4] = "k_img/maingraphic05.jpg";
		ChangeLeftImg[5] = "k_img/maingraphic06.jpg";
		ChangeLeftImg[6] = "k_img/maingraphic07.jpg";
		ChangeLeftImg[7] = "k_img/maingraphic08.jpg";
		ChangeLeftImg[8] = "k_img/maingraphic09.jpg";
		ChangeLeftImg[9] = "k_img/maingraphic10.jpg";
		ChangeLeftImg[10] = "k_img/maingraphic11.jpg";
		ChangeLeftImg[11] = "k_img/maingraphic12.jpg";
		ChangeLeftImg[12] = "k_img/maingraphic13.jpg";

function RandomImg01() {
	var i = 0;
	i = Math.round(Math.random() * (JumpLeftImg.length - 1));
	
	document.write('<a href="'+JumpLeftImg[i]+'"><img src="'+ChangeLeftImg[i]+'" alt="海岸環境調査研究会のウェブサイト" width="900" height="200" border="0"></a>');
}